How to confirm the chosen radio button?

Question

I have created three radio buttons. I want to run a function OnClick that ask the user to confirm the chosen radio button and tell what the checked radio button value is. Also if the user doesn't confirm the checked radio button, the radio button will be deselected. This is code i have written but failed.

<input id="a1" type="radio" name="type" value="A1" onClick= "confirmation();" />A1
<input id="a2" type="radio" name="type" value="A2" onClick="confirmation();" />A2
<input id="a3" type="radio" name="type" value="A3" onClick="confirmation();"/>A3

Javascript

function confirmation() {


if (document.getElementById('a1').checked ) {
ty = document.getElementById('a1').value
var ask= confirm("You have chosen " + ty + " as your type \n If you have chosen the right type, Click Ok! " )

}
if (document.getElementById('a2').checked) {
level = document.getElementById('a2').value;
var ask= confirm("You have chosen " + ty + " as your Examination Level \n If you have chosen the right type, Click Ok! " )
}
if (document.getElementById('a3').checked) {
ty = document.getElementById('r1').value;
var ask= confirm("You have chosen " + ty + " as your type \n If you have chosen the right type, Click Ok! " )
}
    if (ask==true) {
        alert("You clicked ok");
    }
    if (ask==false) {
        alert("You clicked cancel");
    }
}

Answer 1

I think you can sum it up to this:

function confirmation(obj) {
    obj.checked ? confirm("You have chosen " + obj.value + " as your type \n If you have chosen the right type, Click Ok!") ? alert("You clicked ok") : obj.checked = false : "";
}

<input id="a1" type="radio" name="type" value="A1" onClick="confirmation(this);" />A1
<input id="a2" type="radio" name="type" value="A2" onClick="confirmation(this);" />A2
<input id="a3" type="radio" name="type" value="A3" onClick="confirmation(this);" />A3

Pass this to the function. this refers to DOM object.